The parent company of MPS, National Business Investigations, Inc. (NBI) is a full-service investigations firm, providing clients a variety of specialized services based on their individual needs and concerns. We work with individuals, law firms, third-party administrators, and insurance companies. We also provide investigative services to municipalities and public utilities, as well as private companies, corporations, and educational institutions for workplace and employment issues.

Our investigators have decades of experience in law enforcement and investigations. This includes conducting public records research, surveillance, interviewing and statement taking.

Individual Investigation Services

NBI offers a number of investigative services designed to gather information on specific individuals. This data can help provide a clearer picture of their assets, actions, and behaviors. Services include:

  • Asset Discovery & Recovery
  • Domestic & Family Law Investigations
  • Heir Investigations
  • Travel Assessments and Country Briefs

Civil and Criminal Investigation Services

A few of our investigation services are intended to uncover information about potential criminal actions or events. This can be helpful in future court proceedings whether you are the plaintiff or defendant. Services in this category include:

  • Witness Locates & Interviews
  • Due Diligence
  • Skip Trace Locates
  • Scene Investigation
  • Service of Process

Business Investigation Services

Some clients hire us to learn more about a particular company or aspect of business. Whether the goal is to improve their market standing or detect potential problems, our investigation services can assist with the process. This includes:

  • Due Diligence 
  • Workplace Harassment, Discrimination and Retaliation Investigations
  • Fraud Detection
  • Embezzlement
  • Theft 
  • Brand Reputation Management

Insurance Investigation Services

If your organization is responsible for insuring individuals and you’re concerned that a claim may be invalid or fraudulent, our investigators can help discover the truth. We work with a number of different insurance-based agencies, offering services such as:

  • General Liability Insurance Defense Investigations
  • Workers’ Compensation Investigations
  • Subrosa

Social Media Investigation Services 

This investigative option is not currently offered to the public. However, for clients that meet certain requirements, our team can conduct a social media investigation to help you learn more about the person behind a specific profile or site. This includes:

  • Profile Location Services
  • Court Ready Captures
  • Complete Page Preservation
  • Comprehensive Reporting
  • Deep and Dark Web Research
  • Ethical and Diligent Services

MPS Areas of Operation

MPS provides investigative services in Northern and Southern California. However, through our vast strategic partnerships throughout the United States developed over 50 years, we can  serve clients with investigative needs that extend nationally and internationally.

Our corporate office is in Murrieta, California, and a majority of our clients are in San Diego County, Riverside County, Orange County, Los Angeles County, and San Bernardino County, San Jose, San Francisco and Sacramento.  Though, we also maintain a network of trusted, thorough investigators throughout the entire state of California.


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